Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6374395 | Field Crops Research | 2016 | 8 Pages |
Abstract
The adjusted S dilution curve for S-sufficient treatments was attenuated in soybean (SÂ =Â 2.8Â Wâ0.11), with no differences among cultivars of maturity groups II and IV, and sowing dates from November to January. For the same treatments, the N:S ratio was stable in shoots during vegetative growth (N:SÂ =Â 12.2), supporting the use of a unique threshold for diagnosing the S status during this period. Sulphur concentration in stems was more responsive to the availability of S than%S in lamina. In addition, the concentration of N in stem tended to be constant with variation in %S while %N and %S correlated in lamina. This produced a greater response of N:S in stem than in lamina. Thus, the determination of%S and N:S in stem are good candidates as indicators of S status of soybean.
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Authors
Guillermo A. Divito, Hernán E. EcheverrÃa, Fernando H. Andrade, Victor O. Sadras,